Mix flour, oats, 1/2 cup brown sugar and 1/2 cup oleo till crumbly.,Press into bottom of 9x13 pan.,Bake at 375 for 30 minutes.,M ix together pumpkin, milk, eggs, sugar and spices.,______,Bake 30 minutes longer.,Combine pecans, 1/2 cup brown sugar and 2 T. oleo.,Sprinkle over pumpkin mixture.,Return to oven and bake 20 minutes more.,Cool in pan; Cut into sqs, and serve with whipped topping.